Inking mechanism for rotary printing-machines



L. A. SCHMIDT.

INKING MECHANSM FOR ROTARY PRINTING MACHINES.

APPLICATION FILED FEB. l9. 19H.

322,829. Patented Nov. 25, 1919.

2 SHETSSHEET I- L. A. SCHMIDT.

INKING MECHANISM FOR ROTARY PRINTING MACHINES.

APPLICATION FILED FEB. 19. I917.

Patented Nov. 25, 1919.

2 SHEETS-SHEET 2- FIG.2..

I "HIM INVENTOR.

flwgd LOUIS A. SCHMIDT, 0F

NEW YORK, N. Y., AssIGNoR. TO B. I-IOE AND 00., on NEW YORK,

N. Y., A CORPORATION on NEW YORK.

ATENT @FFIQE.

- IN KING MECHANIfSM FOR ROTARY PRINTING-MACHINES.

Specification of Letters Patent.

Application filed February 19, 1917. Seria1.No.,149,436.

To all whom z'tmay concern:

Be'it known that I, Loms .A. SoHMID'r, a citizen of the United States,residing at New York city, county of Kings, andState of New York, haveinvented certain new and useful Improvements in Inking Mechanism forRotary Printing-Machines, fully described and represented in thefollowing specification and the accompanying drawings, forming a partof. the same.

This invention relates to certain improvements in inking mechanism forrotary print 111g machines.

In high speed rotary printing machines, the ink is usually deliveredfrom a'suitable fountain by means of a virbr'ating ductor :roll to amaininkdistributing cylinder from which'it is distributed to the form memberof the'pr'inting couple, a similar mechanism being provided for each ofthe couples of the machine. In order to get an even distribution of theink, various rolls are employed, which are known in the art as vibratingrolls, these rolls cooperating with the distributing cylinder to work uporgrind up the ink supplied to the distributing cylinder. To get thebest distribution of ink on the distributing cylinder, these rolls arelocated at desired points about the periphery of the cylinder, and aregiven a vibratorymotion, that is, a motion to and fro longitudinallyofthe axis of thecylinder, usually bymeans of various lever constructions.

It is-the especial object of the present invention to provide asimplified but efiicient mechanism employing levers for giving thislongitudinal vibratory movement to the rolls whereby the leverconstructions through which this motion is effected may be similar, thatis, of the same form and dimensions, so that no matter what thepositions of the-rolls about the distributing cylinder, the same type oflever may be used, the

levers being interchangeable, this affording 1 great convenience,particularly in machines employing a number of printing units, and doingaway with the use of levers ofdifierent lengths.

It is another object of the invention to provide a mechanism forvibrating the rolls which may be driven from the distributing cylinder,and at a speed much less than that .the numeral 1.

of thecylinder, and in which one lever may effect the simultaneousmovement of two rolls in'opposite directions.

With these and other objects in view, the

invention consists in. certain novel parts and combinations which willbe described in detail in connection with the accompanying drawings, inwh1ch Figure l is a side view, partly in section and partly broken away,of somuch of an inking mechanism as is necessary for an understanding ofthe invention, and

Fig. 2 is an end elevation, partly in sec tion, of certain of themechanism shown in Fig. 1.

Referring now to these drawings, the invention has been illustrated inconnection with a rotary printing machine, a form cylinder of suchmachine being indicated by This cylinder 1 has cooperating therewith theusual form rolls 2 to which ink is delivered from the main inkdistributing cylinder 3, this cylinder being driven as usual at the samesurface speed as the form cylinder through any suitable mechanism (notillustrated). Ink is delivered from a suitable source of ink supply, asfountain 3, to the cylinder by means of a vibrating ductorroll 4. Theink distributing cylinder 3 is supported in the side frames of themachine, one

such frame being indicated at 5, and this cylinder has cooperatingtherewith a plurality of ink distributing rolls. ,The numrolls aresupported in any, suitable manner, as in sockets, one of which isindicated markedlO, supported from the main frame 5 of the machine,these sockets being, in the best constructions, adjustable by means ofadjusting rod '11 to vary the pressure of their contact with thedistributing cylinder as may .be expedient, independent sockets beingprovided for each roll.

' These rolls have a vibratory movement, that is, a movement to and frolongitudinally of the distributing c linder, to Work up or mix andthoroughly distribute the ink on the surface of that cylinder, before itis delivered therefrom to the form rolls. In machines embodying theinvention, this movement is effected by the employment of a single cam,which preferably is driven at a reduced speed from the distributingcylinder, this cam operating a number of levers of like construction sothat they are interchangeable. Furthermore, the levers are preferably soarranged that each leverwill operate two rolls simultaneously inopposite directions. While the particular construction for effectingthis may vary in its details, as illustrated there is provided a singlelarge track cam 12 having a track or groove 13. This track cam 12 issupported preferably outside theframe of the machine on a stud14:.having a flanged inner end 15 secured to one of the side frames5 ofthe machine in any suitabl manner, as by screws 16. This cam is drivenfrom the distributing cylinder and preferably at a reduced speed. Whilethis may be effected in various way, in the particular constructionillustrated theshaft 17 of the distributing cylinder is provided with adriving pinion 18 which meshes with a gear 19 on a short cross shaft '20mounted in suitable bearings in one of the side frames 5 of the machine.This shaft 20 has formed on its outer end a pinion 21 which meshes witha gear 22 fast on a hub23 of the track cam 12 before referred to, thegears 18, 19, 21, 22 being proportioned to drive the track cam at suchreduced speed from that of the distributing cylinder as is necessary ordesired.

Cooperating with this track cam are a series of levers which areidentical in construction, so that they are interchangeable and can beused for operating the vibrating rolls, no matter what their positionaround the cylinder, thus obviating the use of long and short levers forvarying positions. These levers are indicated generally by the numeral24: and are pivoted centrally to yoked brackets 25 suitably secured inone of the side frames 5 of the machine. These levers have two arms 26,27, each carrying three operating rolls 28, 29 and 30, the rolls 28 and29 being carried on lever arm 26, and the roll 30 being carried on thelever arm 27. The operating rolls 28 take into the groove 13 of thetrack cam 12 and, through these, the levers are rocked on their pivots.The other operating rolls 29, 30 take into grooves 31 formed betweencollars 32 on thevends of the shafts 33 of two adjacent vibrating rolls,as 6, 7, for instance. It will be seen that by this "construction, whenthe levers are operated through the rotation of the track cam 12, thetwo roll shafts engaged by each" of the rolls cause a movementsimultaneously longitudinally of the distributing cylinder,

the vibrating rolls for varying their pressure thereagainst.

It willbe seen by the construction described that a very simple, compactand veiiicient mechanismis "provided by the present invention forvibrating the vibratory rolls in an inking mechanism of this class, inwhich the use of long and short levers is done away with and the leversare interchangeable through any part of the machine.

While the "construction shown and described is a preferredonc, it willbe understood that certain changes and variations may be made as to thedetails without de parting from theinvention.

\Vhat is claimed is: I I 1. In an'inking mechanism for printingmachines, the combination of a distributing cylinder, a'pluralityofvibrating rolls disposed around the cylinder, a single operating camdriven from the cylinder, means operated from the cam for giving therolls a vibratory motion, rider rolls cooperating in which the riderrolls are carried'for' ad- I with the vibrating rolls, and a-piv'otedframe. 7

justing their pressure on the vibrating rolls.

.2. In an inking mechanism for printing machines, the combination of aframe, a distributing cylinder mounted in the frame, a 7

single track cam in line with the cylinder, a

hub for the cam mounted on theframe, a A

gear on' the hub, a gear on the cylinder shaft, reducing gearing fromthe. shaft gear.

to the hub gear, a plurality of longitudinally 7 vibrating rollsdisposed around the cylinder, a plurality of similar levers disposedbetween the cam and the rolls and carried by the frame, a vertical armon each lever having a roller cooperatingwith the cam and a rollercooperating with the v1- bratoryroll, an arm on each lever at rightangles to the first arm, a roller carried thereby for operating anadjacent vibrating roll, and a pivot point located'between the armsaround which each lever is swung by the ,cam to vibrate two adjacentrolls in opposite directions s multaneously. V

'In testimony whereof, I have hereunto set my. .hand.

. Louis A. SCHMIDTQ

